Device for adjusting the type bars relatively to the universal bars in stenographic machines



March 1, 1932. 4 GRANDJEAN 1,847,074

DEVICE FOR ADJUSTING THE TYPE BARS RELATIVELY TO THE UNIVERSAL BARS 1NSTENOGRAPHIC MACHINES Filed Sept. 11, 1928 6 Sheets-Sheet DEVIC THEUNIVERSAL BARS I N STENOGRAPHIC MACHINES Filed Sept. 11. 1928 2 3Sheets-Sheet March 1, 1932. 'GRANDJEAN 1,847,974

DEVICE FOR ADJUSTING THE TYPE BARS RELATIVELY TO THE UNIVERSAL BARS INSTENOGRAPHIC MACHINES Filed Sept. 11, 1928 5 Sheets-Sheet 3 PatentedMar. 1, 1932 UNITED STATES MARC GRANDJEN, PARIS, FRANCE DEVICE FORADJUSTING THE TYPE BARS RELATIVELY TO THE UNIVERSAL BARS IN STENOGRAPHICMACHINES Application filed September 11, 1928, Serial No. 305,298, andin France October 4,

The present invention relates to a device versal bar instenographicmachines.

The invention consists in the fact that with the universal barcooperates an articulated member bearing tightly upon every one of thekey levers and one of the ends of which is cambered so as to pass underthe lever and cooperate With the universal bar, the other end of thesaid member having portions adjacent to holes drilled in the key lever.In this way, it is possible to regulate the posi-' tion of the said partin introducing into one of the holes a point by means of which apressure is exerted upon the said portions of the said member.

An embodiment of the device according to the invention is represented,by way of example, in the accompanying drawings.

Figure 1 is a side view of that part of the machine comprising theprinting members only.

Figure 2 is a plan view.

Figure 3 is a back view.

Figure 4 is a cross section along the axis of the machine.

In the embodiment which is represented,

' the key levers bear upon the universal bar 6 through a cushion 9, partof which is reinforced by a flanged sheet metal strip, the other partbeing made of india rubber lined if necessary with a plastic matter suchas lead, rubber sponge, or the like.

The printing members are assembled on a block which comprises two cheeks1 between which are arranged partitions2 maintained by cross ties 3.

The key levers 4 which rock about a shaft 8 are guided between saidpartitions and rest on a universal bar fi'through members 5..

Said members are fulcrumed tightly on levers 4 by means of riveted pins7. One of 'the ends 5a is cambered so as to pass under the lever 4 andcooperate with the universal bar 6. The other end is divided into twobranches or arms 56 and so arranged as to partially cover two holes 4aand 4b provided in the levers 4. y

In order to regulatethe position of the member 5, a point is introducedinto the one 50 or the other of the holes 4a and 4b and a lever actionis exerted so as to cause the member 5 to rotate in the one or in theother direction whet-her it'is desired. to have the canibered end 5amove up or down.

It is by this means possible to regulate accurately the moment at whichthe said levers 4 come in contact with the universal bar 6.

The support of the key levers upon the bar (3 is effected through themedium of a cushion 5o 9 composed of a tube or a strip of rubber 9acompressed along its length over a portion of its-width in a frame ofhard material 9b and maintained in this position by a rigid core 90,whilst the other portion is empty or' preferably'provided inside withplastic material 9d. a

The rear part of the bar 6 is formed by a cross-piece or stay 18 whichcarries a shock-. absorbing cushion 19 formed of a piece of rubbertubing attached to a frame, for example.

, Said cushion 19, at every printing movement, engages a roller mountedon a rod 121 guided on the pedestal by a pin 122 in 7.

' a slot 123; rod 121 thus raised causes a lever 106 pivoted on a pin124 to oscillate, which lever carries a toothed sector 125 meshing witha wheel 126 loose on the paper wind-up reel pin 128. y

Said wheel drives the reel through a ratchet gear and a friction clutch.The various members of said mechanism are so dimensionedthat, at everyoscillation of lever 106,

- y the displacement of a point on the periphery 35 of the paper reel128 is greater than the forward step brought about by the drivingmechanism of the strip, according to a known principle.

One peculiarity of. this invention is that,

in order to avoid the noise produced by the driving mechanism of reel128, namely by the ratchet gear, lever 106 may be moved on its support98 so that the toothed sector 125 is no longer engaged with/the toothedwheel 126. In proportion all the paper strip is advanced by theadvancing mechanism, the printed part then falls freely by its ownweight. In that way, the driving mechanism of the reel 128 does notcauseany noise at all.

In order that lever 106 may be made inoperative, same is provided with aslot 129 through which projects a pin 130 fixed to support 98 andcarrying a small bell cranklever 131; one arm of the latter is providedwith a roller 132 which engages lever 106 when the other arm of saidbell crank lever is lowered so as to drive back sector 125 out ofengagement with wheel 126 as shown in chain lines in Figure 5. In Figure5, support 98 is shown in raised position in order to reduce thedimensions of the drawings; the position which it reallyoccupies onoperation is shown in chain lines in 98*.

' When bell crank lever 131 is raised, lever 106 is brought back to itsworking position under the action of a spring 133.

The key levers operate type bars 20 with which they are maintained inpermanent contact by springs 21 housed in spring carriers maintainedbetween partitions 2.

Said springs operate close to shaft 23 of the type bars and havesufiicient strength to maintain in position those of the type leverswhich are not in operation, whereas the other levers which are acted onby the fingers are brought back to their initial positions by the actionof torsion springs 10 which act on both arms of the universal bar 6 andthe tension of which may be adjusted by hooking their ends in thevarious notches of racks 11 fixed to the supporting frame.

7 In addition. the printing block comprises a pressure roller devicecomprising two sets of levers 24 and 25 carrying in sockets 26 and 26apins 27 and 28 the one of which 27 carrying three discs 27 applies thepaper in three bearing places against the printing cyl inder, and theother 28 carries a soft or hard rubber cylinder 28 which applies thepaper against the printing cylinder at the same one and the samegeneratrix of said shaft, even during the printing.

A stop 73 is provided in order to limit the upward stroke of the keylevers (Figure 4) said stop consists of a reinforced rubber part carriedon two metal plates 74 and 75 the vertical position of which may beadjusted by means of a set screw.

Claims:

1. In a stenographic or similar machine the combination of key leverseach having two holes, a rocker mounted to tightly fit on each lever andhaving two arms which come into alinement with said holes in the leverfor the vertical adjustment of said lever and a universal bar on whichsaid rockers permanently rest. a

2. In a device for regulating the position of the key levers instenographic machines relativelyto the universal bar, the combinationwith each key lever of a shaft mounted .on the said lever, a regulatingor adjusting member fulcrumed on the said shaft and pressed upon oneside of the lever so that it cannot be shifted except when a tightcontact is made, one of the ends of the said member being curved underthe said key lever so as to'cooperate with the said universal bar, theother end of the said {regulating member being provided with two edges,the said hey lever having two holes provided therein and so disposed tobe partially covered by the two above mentioned edges of the regulatingmember, substantially as described and for the purpose specified.

In testimony whereof I have hereunto affixed my signature.

1 MARC GRANDJEAN.

